Cornet attachment.



No. 679,644. Patented July 30, l90l.

C. SPRINGER &. G. DAVIS. I

co'nun ATTACHMENT.

(Application Med Jan. 18, 1901.) (No Model.)

IN VE N TOHJ I Caziar 6% WITNESSES A ZTOHNEYS' NITED STATES PATENTQFFIGE.

CHARLES SPRINGER AND GEORGE DAVIS, OF NEWARK, NEWV JERSEY.

CORNET ATTACHMENT.

SYECIFIGATION forming part Of Letters Patent No. 679,644, dated July 30,1901.

Application filed January 18, 1901. Serial No. 43,726. (No model.)

To all whom/.625 may concern:

Be it known that we, CHARLEs SPRINGER and GEORGE DAVIS, citizens of theUnited States, and residents of Newark, in the county of Essex and Stateof New Jersey, have invented a new and improved Cornet Attachment, ofwhich the following is a full, clear, and exact description.

This invention relates to a cornet attachment for enabling us to changethe pitch from A-natural to B-flat, and vice versa, without interruptingthe use of the instrument.

I Our invention seeks to provide an attachment of the characterindicated which is very simple and cheap and can be readily applied to acomet.

This specification is a specific description of one form of theinvention, while the claims are definitions of the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views.

Figure 1 is a view of a cornet with our attachment applied thereto. Fig.2 is a section on the line 2 2 of Fig. 3, and Fig. 3 is a section on theline 8 3 of Fig. 2.

a indicates the cornettube, and b the mouthpiece. Between these parts,as indicated best in Fig. 1, is placed our attachment, which comprises acircular casing 0, provided with a tubular extension d, into which themouthpiece fits, and a similar and oppositely-disposed extension 6,fitting in the tube a. Attached to the casing c and communicating withthe same at diametrically opposite points is a tube composed of two U-shaped sections, respectively designated f and g and each having one ofits members longer than the other. The section 9 is formed integral withor rigidly attached to the casing c, and the section f has one armfitting slidably within the corresponding arm of the section g and theother arm fitting slidably within a boss 0, formed on the casing 0. Thistube (formed of the sections f and g) furnishes a passage around thecasing c from one side to the other thereof, and the length of suchpassage may be regulated .by moving the section f inward or outward, asdesired. By moving the section f outward from the position shown inFigs. 2 and 3 the of the casing e, such top being held firmly in placeby an annulus c screwed on the casing and bearing against the top. Thevalve h is provided with a straight diametricallydisposed passage 72.and is capable of movement from the position shown in Fig. 2 to aposition which will place the passage k in registry with the tubes 61and 6. Then a straight uninterru pted passage will-be afforded throughthe attachment from the mouthpiece b to the tube a, and the instrumentin this adjustment will give the pitch B-fiat. The valve h is alsoformed with two arc-shaped passages 71. located one at each side of thepassage h and capable of registering the one passage h with the tube d,and the sectionfof the tube forming the passage around the casing c, andthe other passage h with the tube 6 and the section 9 of the said tubewhich forms a passage around the casing. When the valve is in thisadjustment, (see Figs. 2 and 3,) the blast blown into the mouthpiecewill be caused to travel through the tube 02 and through the parts f andg of the by-pass tube and thence through the tube e into the comet-tube.This makes a longer passage for the air and puts the instrument in thepitch A-natural.

For adjusting the valve h we provide a thumb-piece t', which is attachedto the pivot or stem h of the valve by means of a socket t", fastened onthe'stem h. This thumb-piece has two springs 13 attached thereto, andthese springs are adapted to work with studs 0 fastened to the top 0 ofthe casing c, the parts '5 and c acting together serving to hold thethumb-piece i in the desired position. When the thumb-piece is in oneposition, the valve h is adjusted for one of the pitches referred to,and when the thumb-piece is thrown to the other position the valve isadjusted for the other pitch.

Now it will be clear that by means of this attachment the instrument maybe readily changed from A-natural to B-flat, and vice versa, and thischange being brought about by the manipulation of the thumb-piece i willnot require that the instrumentbe taken from the mouth or that the musicbe in any way interrupted. Further, the device for changing the pitch isplaced in the theoretically'correct position, and all of the parts beingin practically the same temperature there will be no effect on the pitchwhen the change is made from one to another. In the old arrangement oftwo separate tubes when a new tube is placed in position this tube beingcolder than the other parts of the cornet will eliect the purity of thetone and pitch of the instrument; but such objection will not be foundwith our invention. The adjustable section fot the by-pass tube enablesus to so adjust the length of the passage formed by this tube as toproduce the pitch desired and to correct any inaccuracy that may existin the pitch. This arrangement also avoids another disadvantagepreviously existing in col-nets namely, that the pitch may be changed atwill without lengthening or shortening the shank or hub of theinstrument. Previously much inconvenience was occasioned by thesubstitution of the long and short tubes; but by our invention thechange can be made without changing the position of the mouthpiece.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- 1. A cornet attachment, comprising a casingwith oppositely-disposed tubular extensions communicating with theinterior thereof,one extension serving to connect the mouthpiece withthe casing and the other the casing with cornet-tube, a tube passingaround the casing and across the longitudinal line of said extensions,said tube having its ends turned inward toward and communicating withthe interior of the casing at opposite sides, and being formed of twoslidably-connected U-* shaped sections adjustable to increase or di- 5minish the length of the tube, and a threepassage rotary valve workingin the casing and commanding the said tubular extension I and the tube,for the purpose specified.

2. An attachment for cornets, comprising a casing havingoppositely-disposed tubular extensions, one for connection with thecornet tube or shank and the other for connecl tion with the mouthpieceof the cornet, a tube passing around the casing and across thelongitudinal line of the said tubular extensions,

the tube having its ends turned inward and communicating with theinterior of the casing at opposite points, and a three-passage rotaryvalve working in the casing commanding the said tubular extensions andthe tube, and means whereby the valve will be held in the position towhich it had been moved for the purpose specified.

3. A cornet attachment, comprising a casing with oppositely-disposedtubular exten sions communicating with the interior thereof, oneextension being adapted to receive the mouthpiece of the cornet and theother to enter the cornet-tube, a tube in two slidably-connectedsections, said tube passing around the casing across the longitudinalline of the said tubular extensions and havingits ends turned inwardtoward and com municating with the interior of the casing at oppositesides, one section of the said tube being fixedly connected with thecasing and the other section being slidable on the first section andslidable also on the casing, for the purpose specified, and a rotaryvalve working in the,

casing and provided with a straight passage and two arc-shaped passages,said passages commanding the said tubular extensions, and the tube.

t. A cornet attachment, consisting of a casing provided withoppositely-arranged tubular extensions, one to receive the mouthpiece ofthe cornet and the other to enter the cornettube, a tube formed of twoU-shaped sections slidable one upon the other, one section being fixedlysecured to the casing and the other slidably connectedtherewith,arotaryvalveinthe casing having a stem projecting through thetop of the casing and provided with a straight passage and twoarc-shaped passages, studs on the top of the casing, and a thumb-piecesecured to the stem of the valve and provided with oppositely-projecting springs adapted to engage the said studs, as set forth.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

CHARLES SPRINGER. GEORGE DAVIS.

W'itnesses:

I. B. Owens, JNo. M. BITTER.

